I am building a 3kw amplifier for my amateur radio station, I am also using the Panlee 3.5" WT32-SC01 Plus module to interface with the amplifier. It will display some info like SWR, PWR, Band, Antanna, and Temperature / Fan State. I will use it to select the band in use, choose the antenna, put it in bypass, and do a few other little tricks.
The Panlee only has 6 GPIO pins, I will need much more than that. It also has RS485. Is there a method of using RS485 to communicate between two ESP32 boards? To use one as a master, and the other as a slave to expand on my GPIO?